Browsing by Author "Christudas, S P"
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Item Control of the insect pests affecting cowpea Vigna Sinensis(Kerala Agricultural University, 1977) Das, N M; Susamma Mathai; Christudas, S PIn a field experiment conducted in the red soil of Agricultural College Farm, Vellayani applying thimet, disulfotan, rnephosfolan and carbofuron granules at three different levels, applied at the' time of sowing, disulfoton at 1 kgai/ha was found an effective and economic method for controlling pea aphid upto 5 weeks after sowing. In another field experiment it was observed that spraying of different insecticides commencing from the time of flowering along with one application of disulfotan granules at the rate of 1 kg ai/ha at the time of sowing reduced the incidence of pea aphid and pod borers and increased the yield significantly. On a benefit cost ratio basis the effective insecticides could be ranked as follows: f enithion >f enitrothion > monocrotophos > carbaryl > phosalone > quinalphos.Item Field evaluation of insecticides against pests of paddy(Kerala Agricultural University, 1975) Susamma Mathai; Christudas, S P; Nair, M R G KItem Investigations on the control of the banana aphid Pentalonia nigronervosa Coq.(Kerala Agricultural University, Vellanikara, 1966) Ramanatha Menon, M; Christudas, S PItem Movement of banana bunchy top virus in the plant(Kerala Agricultural University, 1970) Sam Raj, J; Ramanatha Menon, M; Christudas, S PItem Notes on field evaluation of insecticides(Kerala Agricultural University, 1971) Christudas, S P; Susamma, Mathai; Nair, M R G KItem Occurrence of Nilaparvatha lugens (Stal.) (Delphacidae: Homoftera) as a serious pest of paddy in Kerala(Kerala Agricultural University, 1972) Das, N M; Mammen, K V; Christudas, S PItem On the control of Liothrips karnyi (Bagnall) pepper leaf gall trips(Kerala Agricultural University, 1976) Nair, M R G K; Christudas, S PItem On the control of the jassid Amrasca Biguttula biguttula (Ishida) on bhindi using some new insecticides(Kerala Agricultural University, 1976) Nair, M R O K; Christudas, S P; Susamma MathaiItem Studies on the population of the aphid Pentalonia nigronervosa Coq. on banana plants in Kerala(Kerala Agricultural University, Vellanikara, 1967) Ramanatha Menon, M; Christudas, S PItem Use of insecticides for control of pests of brinjal and bhindi(Kerala Agricultural University, 1975) Christudas, S P; Susamma Mathai; Nair, M R G K